Fix issue links in HISTORY

Author: bibajz

HISTORY.rst

@@ -8,9 +8,9 @@ History
 * Fix an issue structuring bare ``typing.List`` s on Pythons lower than 3.9.
   (`#209 <https://github.com/python-attrs/cattrs/issues/209>`_)
 * Fix structuring of non-parametrized containers like ``list/dict/...`` on Pythons lower than 3.9.
-  (`#218 https://github.com/python-attrs/cattrs/issues/218`_)
+  (`#218 <https://github.com/python-attrs/cattrs/issues/218>`_)
 * Fix structuring bare ``typing.Tuple`` on Pythons lower than 3.9.
-  (`#218 https://github.com/python-attrs/cattrs/issues/218`_)
+  (`#218 <https://github.com/python-attrs/cattrs/issues/218>`_)
 
 
 1.10.0 (2022-01-04)